In order to measure the period of a simple pendulum using a stop clock, a student repeated the experiment for 10 times and noted down the time period for each experiment as 5.1 , 5.0 , 4.9 , 5.1 , 5.0 , 4.9 , 5.1 , 5.0 , 4.9 s . The correct way of expressing the result for the period is

Question

In order to measure the period of a simple pendulum using a stop clock, a student repeated the experiment for 10 times and noted down the time period for each experiment as 5.1 , 5.0 , 4.9 , 5.1 , 5.0 , 4.9 , 5.1 , 5.0 , 4.9 s . The correct way of expressing the result for the period is, 4.99 s, 5.0 s, 5.00 s, 4.9 s

MARKS App · Accepted Answer

Mean = ∑ x i f i 10 = 4.9 × 4 + 5.0 × 3 + 5.1 × 3 10 = 4.99 s Which can be round off to 5.0 s correct to two significant figures.

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